The Islamic State of Iraq and Greater Syria (ISIS) has systematically targeted minorities in Iraq and may be guilty of committing genocide, a new report from human rights groups says.

The report aims to shed light on the atrocities committed against minority religious groups, including Christians, Yazidis and Turkmen. Based largely on eyewitness accounts and field visits across Iraq, the report says ISIS has committed summary executions, sexual violence and torture that amount to crimes against humanity and possibly genocide.

“Information exists which would support a prima facie case that ISIS forces have committed the crime of genocide against religious minorities in northern Iraq, in particular against the Yezidi minority,” the report says.

The report, released in Brussels on Friday, comes days after ISIS kidnapped at least 90 Assyrian Christian men, women and children in Syria.

Islamic State of Iraq and Greater Syria (ISIS) militants have abducted at least 90 Christian men, women and children from a cluster of villages in northeastern Syria, according to reports received by human rights activists on Tuesday.

The Syrian Observatory for Human Rights reported that ISIS militants seized members of the Assyrian community, a Christian minority sect, during a series of dawn raids centering on the town of Tal Tamr and neighboring villages.

Another group, the Syriac National Council of Syria, said that it had verified at least 150 people missing who were kidnapped in the raids.

The abductions occurred as Kurdish Peshmerga forces, backed by U.S. airstrikes, have waged a campaign against ISIS strongholds in northern Syria, forcing ISIS militants back by at least 3 miles, according to Peshmerga commanders and activists on the ground.